我的測驗代碼由于未知原因引發了以下錯誤。可能設定了不正確的模擬，但我不知道如何正確地做，請幫忙。
訊息：測驗方法 GUI_VIS.MsTests.LoginTest.TestEmptyIsAdminWindow 拋出例外：System.NotSupportedException：不支持的運算式：x => x.GetAllEmailAsync("Pepa", "Heslo", new Worker() { }) 不可覆寫的成員（此處： GenericController.GetAllEmailAsync) 不能用于設定/驗證運算式。
Stack Trace: Guard.IsOverridable(MethodInfo method, Expression expression) line 109 MethodExpectation.ctor(LambdaExpression expression, MethodInfo method, IReadOnlyList 1 arguments, Boolean exactGenericTypeArguments, Boolean skipMatcherInitialization, Boolean allowNonOverridable) line 87 ExpressionExtensions.<Split>g__Split|5_0(Expression e, Expression& r, MethodExpectation& p, Boolean assignment, Boolean allowNonOverridableLastProperty) line 219 ExpressionExtensions.Split(LambdaExpression expression, Boolean allowNonOverridableLastProperty) line 150 Mock.SetupRecursive[TSetup](Mock mock, LambdaExpression expression, Func4 setupLast, Boolean allowNonOverridableLastProperty) line 643 Mock.Setup(Mock mock, LambdaExpression expression, Condition condition) line 498 Mock 1.Setup[TResult](Expression1 運算式) 第 452 行 LoginTest.TestEmptyIsAdminWindow() 第 48 行 ThreadOperations.ExecuteWithAbortSafety(Action action)
[TestMethod]
public async Task TestEmptyIsAdminWindow()
{
Login login = new Login();
Mock<GenericController> gcMock = new Mock<GenericController>();
GenericController gc = new GenericController();
login.IdBoxGet().Text = "John";
login.PasswordBoxGet().Text = "Password";
ObservableCollection<Worker> workers = new ObservableCollection<Worker>() {
new Worker
{
Name = "John",
My_password = "Password",
Role = "Boss"
}
};
gcMock.Setup(x => x.GetAllEmailAsync("John", "Heslo", new Worker() { }))
.ReturnsAsync(workers);
var workersFromMocking = await gc.GetAllEmailAsync("John", "Password", new Worker() { });
Assert.IsTrue(workersFromMocking[0].Name == "John");
}
uj5u.com熱心網友回復：
首先，您沒有在任何地方使用 gcMockandlogin物件。在您的情況下，SUT（被測系統）是gc. 模擬應該是gc在呼叫您要測驗的方法時使用的東西，而不是 GenericController 本身。
其次，您的錯誤表明該GetAllEmailAsync方法不可覆寫。Moq 只能使用抽象、虛擬或介面方法。請參閱此問題的已接受答案以進行澄清。
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標籤：C＃单元测试嘲弄
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